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Financial Instruments - Summary of Analysis of Age of Trade Payables (Detail) - Liquidity risk [member] - CAD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure Of Financial Instruments [Line Items] |  |
Analysis of the age of trade payables | $ 1,595 | $ 7,076
Less than 30 days past billing date [member] |  |
Disclosure Of Financial Instruments [Line Items] |  |
Analysis of the age of trade payables | 1,201 | 6,725
31 to 60 days past billing date [member] |  |
Disclosure Of Financial Instruments [Line Items] |  |
Analysis of the age of trade payables | 365 | 113
61 to 90 days past billing date [member] |  |
Disclosure Of Financial Instruments [Line Items] |  |
Analysis of the age of trade payables | $ 29 | 66
Over 90 days past billing date [member] |  |
Disclosure Of Financial Instruments [Line Items] |  |
Analysis of the age of trade payables |  | $ 172

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- Definition The amount of trade payables and other payables. [Refer: Trade payables; Other payables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph k -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_k&doctype=Standard -URIDate 2017-03-09 + Details
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